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Research on the ions' axial temperature of a sympathetically-cooled 113Cd+ ion crystal |
| Nong-Chao Xin(辛弄潮)1, Sheng-Nan Miao(苗胜楠)1, Hao-Ran Qin(秦浩然)1,2, Li-Ming Guo(郭黎明)1, Ji-Ze Han(韩济泽)1,2, Hua-Xing Hu(胡华星)1, Wen-Xin Shi(施文心)1, Jian-Wei Zhang(张建伟)1,†, and Li-Jun Wang(王力军)1,2 |
1 State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China;
2 Department of Physics, Tsinghua University, Beijing 100084, China |
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Abstract Molecular dynamics simulation of a sympathetically-cooled 113Cd+ ion crystal system is achieved. Moreover, the relationship between ions' axial temperature and different electric parameters, including radio frequency voltage and end-cap voltage is depicted. Under stable trapping condition, optimum radio frequency voltage, corresponding to minimum temperature and the highest cooling efficiency, is obtained. The temperature is positively correlated with end-cap voltage. The relationship is also confirmed by a sympathetically-cooled 113Cd+ microwave clock. The pseudo-potential model is used to illustrate the relationship and influence mechanism. A reasonable index, indicating ions' temperature, is proposed to quickly estimate the relative ions' temperature. The investigation is helpful for ion crystal investigation, such as spatial configuration manipulation, sympathetic cooling efficiency enhancement, and temporal evolution.
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Received: 22 March 2021
Revised: 18 May 2021
Accepted manuscript online: 20 May 2021
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PACS:
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37.10.Ty
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(Ion trapping)
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37.10.Rs
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(Ion cooling)
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37.90.+j
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(Other topics in mechanical control of atoms, molecules, and ions)
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31.15.xv
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(Molecular dynamics and other numerical methods)
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| Fund: Project supported by the Beijing Natural Science Foundation (Grant No. 1202011), the Tsinghua University Initiative Scientific Research Program, the National Natural Science Foundation of China (Grant No. 12073015), and the National Key Research and Development Program of China (Grant No. 2016YFA0302101). |
Corresponding Authors:
Jian-Wei Zhang
E-mail: zhangjw@tsinghua.edu.cn
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Cite this article:
Nong-Chao Xin(辛弄潮), Sheng-Nan Miao(苗胜楠), Hao-Ran Qin(秦浩然), Li-Ming Guo(郭黎明), Ji-Ze Han(韩济泽), Hua-Xing Hu(胡华星), Wen-Xin Shi(施文心), Jian-Wei Zhang(张建伟), and Li-Jun Wang(王力军) Research on the ions' axial temperature of a sympathetically-cooled 113Cd+ ion crystal 2021 Chin. Phys. B 30 113701
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